[  513.499286] bond0: (slave eth0): making interface the new active one
[  513.499377] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.711225] bond0: (slave eth0): Releasing backup interface
[  517.779733] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.937204] bond0: (slave eth0): Releasing backup interface
[  521.965137] bond0 (unregistering): Released all slaves